Parametric Optimization of Laser Additive Manufacturing of Inconel 625 Using Taguchi Method and Grey Relational Analysis

Table 7

ANOVA for S/N ratio for surface roughness and width error.

Response	Factors					% contribution
Surface roughness ()	LP	15.5	2	7.75	22.464	25.934
	SS	0.69	2	Pooled	—	—
	PFR	6.597	2	3.299	9.562	11.038
	OR	36.98	2	18.49	53.594	61.874
	Error	(0.69)	(2)	(0.345)		(1.154)
	Total	59.767	8			100
Width error ()	LP	7.735	2	Pooled	—	—
	SS	47.605	2	23.803	8.624	18.612
	PFR	3.308	2	Pooled	—	—
	OR	197.125	2	98.563	35.711	77.07
	Error	(11.043)	(4)	(2.76)		(4.318)
	Total	255.773	8			100

; ; ; ; ; ; ; .